CN111088955A

CN111088955A - Drilling fluid storage workstation

Info

Publication number: CN111088955A
Application number: CN201911372764.2A
Authority: CN
Inventors: 李晓亮; 赵向东; 刘坚; 王学军; 石昕; 高鲁; 曾金辉; 秦涛; 郭有田; 扈李娜; 魏群坤
Original assignee: Sichuan Petroleum Construction Engineering Co Ltd
Current assignee: Sichuan Petroleum Construction Engineering Co Ltd
Priority date: 2019-12-27
Filing date: 2019-12-27
Publication date: 2020-05-01
Anticipated expiration: 2039-12-27
Also published as: CN111088955B

Abstract

The invention provides a drilling fluid storage workstation. The system comprises: the system comprises a slurry rotating system, a slurry mixing system, a drilling fluid modulating system, a drilling fluid storage system, a circulating system and a barite powder storage system; the slurry transferring system comprises a slurry transferring tank and a sand pump, wherein the slurry transferring tank can be used for containing basic drilling fluid, and the sand pump can be used for conveying the basic drilling fluid out of the slurry transferring tank; the slurry preparation system comprises a slurry preparation tank and can receive basic drilling fluid; the drilling fluid modulation system can mix the basic drilling fluid and the ingredients in the slurry preparation tank to obtain the target drilling fluid; the drilling fluid storage system can store target drilling fluid; the circulating system can make the drilling fluid in the drilling fluid storage tank circularly flow; the barite powder storage system can convey barite powder to the feed pump mixing hopper. The beneficial effects of the invention can include: the systems can be fully matched, the supply requirement of a large amount of oil-based drilling fluid can be met, and the use number of barite powder storage tanks can be reduced to the maximum extent; can adapt to the narrow working condition in on-the-spot place.

Description

Drilling fluid storage workstation

Technical Field

The invention relates to the field of well head matching equipment for petroleum and natural gas drilling, in particular to an oil-based drilling fluid storage workstation.

Background

The drilling mud consists of oil, water, glue, organic clay and oil soluble chemical treating agent. The drilling fluid slurry has the advantages of high temperature resistance, salt and calcium corrosion resistance, contribution to well wall stability, good lubricity, small damage to an oil-gas layer and the like, and is widely applied to the process of oil and gas exploitation.

At present, with the development of a drilling technology, the drilling depth is continuously improved, the dosage of drilling fluid is increased, and the components of drilling fluid are more complicated due to the development and application fluid of novel drilling fluid. Therefore, the well mouth matching device with good design is very important for storing and conveying the drilling fluid. Meanwhile, the drilling fluid has the characteristics of flammability, explosiveness, corrosion and the like, and is influenced by factors such as construction site terrain and the like, so that higher requirements are provided for the safety and stability of a storage device of the drilling fluid.

Disclosure of Invention

In view of the deficiencies in the prior art, it is an object of the present invention to address one or more of the problems in the prior art as set forth above. For example, it is an object of the present invention to provide a drilling fluid storage station that can meet the demand for a large supply of oil-based drilling fluid.

In order to achieve the above object, the present invention provides a drilling fluid storage workstation.

The drilling fluid storage workstation may comprise: a slurry rotating system, a slurry preparing system, a drilling fluid modulating system, a drilling fluid storage system, a circulating system and a barite powder storage system, wherein,

the slurry transfer system may include: the slurry mixing system comprises a slurry mixing tank and a sand pump, wherein the slurry mixing tank can contain basic drilling fluid and comprises a tank body surrounded by a first base, a first peripheral side wall and a first top plate, at least 1 manhole cover component is further arranged on the first top plate, and the sand pump can transmit the basic drilling fluid in the slurry mixing tank to a slurry distribution system;

the slurry preparation system can comprise at least one slurry preparation tank, wherein the slurry preparation tank can receive basic drilling fluid transmitted by a sand pump and comprises: the slurry tank comprises a tank body, a middle partition plate, two groups of first stirrers, two groups of first liquid inlet pipe assemblies, two groups of first liquid discharge pipe assemblies, two groups of first liquid level meter assemblies and two groups of first sand cleaning door assemblies, wherein the tank body is formed by encircling a second base, a second peripheral side wall and a second top plate; the two groups of stirrers can respectively stir the drilling fluid in the two sub-tanks; the two groups of first liquid inlet pipe assemblies are arranged on the second top plate and are respectively communicated with the two sub-tanks; the two groups of first liquid discharge pipe assemblies are arranged at the lower part of the second peripheral side wall and are respectively communicated with the two sub-tank bodies; the two groups of first liquid level meter assemblies can respectively measure and display the heights of the drilling fluid in the two sub-tank bodies; the two groups of first sand cleaning door assemblies are respectively arranged at the lower parts of the second peripheral side walls corresponding to the two sub tank bodies;

the drilling fluid preparation system can comprise at least 1 feed pump, and the feed pump can mix the basic drilling fluid and the ingredients in the slurry preparation tank to obtain the target drilling fluid; the charge pump includes: the system comprises a suction pipeline, a pump main body, a Venturi assembly, a discharge pipeline and a mixing funnel, wherein the suction pipeline, the pump main body, the Venturi assembly and the discharge pipeline are sequentially connected according to the flowing direction of drilling fluid, and the mixing funnel is arranged above the Venturi assembly, wherein the suction pipeline can receive and flow through the basic drilling fluid in the slurry distribution tank; the venturi assembly comprises a first pipe body, a second pipe body and a third pipe body, wherein the first pipe body, the second pipe body and the third pipe body are sequentially connected and finally connected to a discharge pipeline, one end of the first pipe body is connected with the pump main body, the pipe diameter of the second pipe body is gradually increased along the flowing direction of drilling fluid, the pipe diameter of a liquid inlet end of the second pipe body is smaller than that of the first pipe body, and the lower end of the third pipe body is communicated with the first pipe body; the mixing funnel can add ingredients into the Venturi tube part, and a discharge hole connected with the upper end of the third tube body is formed in the bottom of the mixing funnel;

the drilling fluid storage system may include at least 1 drilling fluid storage tank, each drilling fluid storage tank capable of storing a target drilling fluid obtained by the charge pump, and includes: the drilling fluid cleaning device comprises a tank body, at least 1 second stirrer, at least 1 second liquid inlet pipe assembly, at least 1 second liquid discharge pipe assembly, 1 second liquid level meter assembly and at least 1 second sand cleaning door assembly, wherein the tank body is formed by a third base, a third peripheral side wall and a third top plate in a surrounding mode, and the second stirrer can stir drilling fluid in the tank body; the second liquid inlet pipe assembly is arranged on the third top plate and communicated with the interior of the tank body; the second liquid discharge pipe assembly is arranged at the lower part of the third peripheral side wall and is communicated with the interior of the tank body; the second liquid level meter component can measure and display the height of the drilling liquid in the tank body; the second sand removal door assembly is arranged at the lower part of the third peripheral side wall and is communicated with the interior of the tank body;

the circulating system can circulate the drilling fluid in the at least 1 drilling fluid storage tank and comprises at least one circulating pump;

the barite powder storage system may include: at least 1 barite powder storage module, barite powder belongs to one in the batching, barite powder storage module can be to the mixing funnel of charge pump carries the barite powder, and includes: the device comprises a storage tank body, an exhaust pipe, a feeding unit, a discharging unit, a gas distribution unit and a base, wherein the storage tank body can store barite powder, at least one gasification bed is arranged at the lower part of the storage tank body, and a discharge hole is formed in the bottom of the storage tank body; the exhaust pipe can exhaust gas in the storage tank body, the upper end of the exhaust pipe is positioned at the upper part in the storage tank body, the lower end of the exhaust pipe is positioned outside the storage tank body, and an exhaust control valve is arranged on a pipe section of the exhaust pipe, which is positioned outside the storage tank body; the feeding unit can convey barite powder into the storage tank body and comprises a feeding control valve, a feeding pipe and a filter, wherein the feeding pipe and the filter are connected, the feeding pipe penetrates through the pipe wall of the storage tank body, the upper end of the feeding pipe is located at the upper part in the storage tank body, the lower end of the feeding pipe is located outside the storage tank body, and the feeding control valve is located on a pipe section of the feeding pipe located outside the storage tank body; the filter is arranged outside the material storage tank body, one end of the filter is connected with the lower end of the feeding pipe, and the other end of the filter can receive barite powder conveyed from the outside; the discharging unit can discharge barite powder in the storage tank body and comprises a discharging pipe connected with a discharging port of the storage tank body, and the discharging pipe can be connected with the mixing hopper through a pipeline; the gas distribution unit can be used for configuring gas required by operation; the base sets up under the storage tank body and can support the storage tank body.

According to an exemplary embodiment of the present invention, the sand pump may be connected to the slurry tank through a line on which a regulating valve is provided.

According to an exemplary embodiment of the present invention, one side of the first base may extend a distance beyond the first circumferential side wall, and the sand pump is disposed on a portion of the base extending a distance beyond the first circumferential side wall.

According to an exemplary embodiment of the present invention, the first sand removal gate assembly may be hammer-blasted; the second sanddoor assembly may be hammer-blasted or masked.

According to an exemplary embodiment of the invention, the drilling fluid storage system may comprise at least 2 sets of drilling fluid storage tanks, each set of drilling fluid storage tanks may comprise at least 1 drilling fluid storage tank, the circulation system further comprises at least 2 sets of circulation lines, wherein the number of the circulating line groups is the same as the number of the groups of the drilling fluid storage tanks and can correspond to one another, the number of the circulating line groups is the same as the number of the circulating pumps and can correspond to one another, each circulating line group comprises a first type pipeline and a second type pipeline, the drilling fluid storage tank group comprises a first type pipeline, a second type pipeline and a circulating pump, wherein at least 1 first liquid inlet end and 1 first liquid discharge end are arranged on the first type pipeline, the number of the first liquid inlet ends is the same as that of the second liquid discharge pipe assemblies in the corresponding drilling fluid storage tank group, the first liquid inlet ends correspond to the second liquid discharge pipe assemblies one by one, the first liquid inlet ends corresponding to the first liquid inlet ends are connected with the second liquid discharge pipe assemblies, and the first liquid discharge ends are connected with the liquid inlet ends; at least 1 second liquid discharge end and 1 second liquid inlet end are arranged on the second type pipeline, the number of the second liquid discharge ends is the same as that of the second liquid inlet pipe assemblies in the corresponding drilling fluid storage tank group, the second liquid discharge ends in corresponding relation are connected with the second liquid inlet pipe assemblies, and the second liquid inlet ends are connected with the liquid discharge ends of the corresponding circulating pumps.

According to an exemplary embodiment of the present invention, the drilling fluid storage workstation may further include a loading line connected to the second type line to discharge the target drilling fluid circulated from the drilling fluid storage tank to the outside; the drilling fluid storage workstation may further comprise an emergency pool connected to the second type of pipeline.

According to an exemplary embodiment of the present invention, in case that the number of the circulation lane groups is M, the first type lines of the N circulation lane groups may be connected to each other through a connection line provided with a regulating valve; the second type pipelines in the P circulating pipeline groups can also be connected through a connecting pipeline provided with a regulating valve, wherein M is more than or equal to 2, M is more than or equal to N is more than or equal to 2, M is more than or equal to P is more than or equal to 2, and M, N, P is an integer.

According to an exemplary embodiment of the present invention, the second liquid inlet pipe assembly and the second liquid outlet pipe assembly are provided with regulating valves.

According to an exemplary embodiment of the present invention, the first liquid inlet pipe assembly and the first liquid outlet pipe assembly are provided with regulating valves.

According to an exemplary embodiment of the present invention, the drilling fluid preparation system may further include at least 1 group of preparation lines, the number of the group of preparation lines is the same as the number of the slurry preparation tanks and can correspond to one another, the number of the group of preparation lines is the same as the number of the feed pumps and can correspond to one another, each group of preparation lines includes a third type pipeline and a fourth type pipeline, wherein at least 2 third liquid inlet ends and 1 third liquid outlet end are provided on the third type pipeline, the number of the third liquid inlet ends is the same as the number of the first liquid outlet pipe assemblies in the corresponding slurry preparation tanks and corresponds to one another, the third liquid inlet ends in a corresponding relationship are connected to the first liquid outlet pipe assemblies, and the third liquid outlet ends are connected to the suction pipes of the corresponding feed pumps; at least 2 fourth liquid discharging ends and 1 fourth liquid inlet end are arranged on the fourth type pipeline, the number of the fourth liquid discharging ends is the same as that of the first liquid inlet pipe assemblies in the corresponding slurry preparation tanks, the fourth liquid discharging ends in corresponding relation are connected with the first liquid inlet pipe assemblies, and the fourth liquid inlet ends are connected with discharge pipelines of corresponding charging pumps.

According to an exemplary embodiment of the present invention, the third type of pipeline can be further connected with a second liquid discharge pipe assembly of not less than 1 drilling fluid storage tank, and the fourth type of pipeline can be further connected with a second liquid inlet pipe assembly of not less than 1 drilling fluid storage tank.

According to an exemplary embodiment of the present invention, the drilling fluid storage workstation may further comprise a weighting system, the weighting system comprises at least 1 weighting pump provided with a mixing hopper, the barite powder storage module is further capable of delivering barite powder to the mixing hopper of the weighting pump, and the weighting pump is capable of mixing the target drilling fluid in the drilling fluid storage tank with the barite powder delivered by the barite powder storage module for further modulation.

According to an exemplary embodiment of the present invention, the structure of the weighted pump may be the same as the structure of the charge pump.

According to an exemplary embodiment of the invention, the drilling fluid storage system may comprise X groups of drilling fluid storage tanks, the weighting system may comprise Y weighting pumps and Y groups of weighting pipes, X is equal to or greater than 2, X is equal to or greater than Y is equal to or greater than 1, and X, Y is an integer; the Y weighting pipeline groups and the Y weighting pumps can correspond to each other one by one; the Y weighted line groups and the Y drilling fluid storage tanks can also correspond one to one; each weighting pipeline group comprises a fifth pipeline and a sixth pipeline, wherein the fifth pipeline can be provided with at least 1 fifth liquid inlet end and 1 fifth liquid discharge end, the number of the fifth liquid inlet ends is the same as that of the second liquid discharge pipe assemblies in the corresponding drilling fluid storage tank group, the fifth liquid inlet ends are in one-to-one correspondence, the fifth liquid inlet ends in the corresponding relationship are connected with the second liquid discharge pipe assemblies, and the fifth liquid discharge ends are connected with the liquid inlet ends of the corresponding weighting pumps; can be provided with 1 at least sixth flowing back end and 1 sixth inlet end on the sixth kind of pipeline, the quantity of sixth flowing back end is the same and the one-to-one with the quantity that corresponds second inlet tube subassembly in drilling fluid storage tank group, and the sixth flowing back end that corresponds the relation is connected with second inlet tube subassembly, and the sixth inlet end is connected with the flowing back end that corresponds aggravate the pump.

According to an exemplary embodiment of the present invention, the barite powder storage system may further include: at least 1 tank scale, at least 1 transmission cable and 1 weighing control device, wherein,

the tank body scales are the same in number as the storage tank bodies and can correspond to the storage tank bodies one by one, each tank body scale comprises a first weighing platform, a weighing sensing unit and a junction box, wherein at least three fixed supporting pieces are arranged on the first weighing platform to support a base below the corresponding storage tank body, the weighing sensing unit comprises at least three sensors, and the junction box is connected with the at least three sensors;

the number of the transmission cables is the same as that of the tank body scales, and the transmission cables and the tank body scales can correspond to each other one by one;

weighing control device and jar body balance separation setting, and including the power, a plurality of the control unit that weighs, wherein, the power is connected with a plurality of the control unit that weighs respectively in order to supply power, the control unit that weighs is the same with transmission cable's quantity and both can the one-to-one, every control unit that weighs all includes the data collection station that connects gradually, microprocessor, the display, wherein, data collection station is connected with the terminal box through the transmission cable that corresponds, and including connecting gradually and finally be connected to microprocessor's signal amplification circuit, signal filter circuit and digital analog conversion circuit.

According to an exemplary embodiment of the invention, the gas distribution unit may include a vertical gas distribution cylinder and a loop pipe, wherein the vertical gas distribution cylinder includes a gas source inlet pipe, a cylinder body and a loop pipe communicating pipe which are connected in sequence according to a gas flow direction, and the gas source inlet pipe is capable of receiving gas delivered by an external gas source; the ring pipe is provided with 1 air inlet and 1 at least first gas outlet, and the air inlet can be connected through pipeline and ring pipe communicating pipe, perhaps can directly be connected with ring pipe communicating pipe, and the quantity of first gas outlet is the same with the quantity of gasification bed and can the one-to-one, and every first gas outlet can both be to the gasification bed conveying gas who corresponds.

According to an exemplary embodiment of the invention, a vertical tie bar may be arranged between the pipe section of the exhaust pipe located inside the storage tank body and the inner wall of the storage tank body.

According to an exemplary embodiment of the invention, the discharging pipe may be a straight pipe, and the pipe openings at both ends of the discharging pipe respectively form a discharging pipe opening and an air inlet, the pipe body of the discharging pipe may further be provided with a feeding pipe opening adapted to the discharging opening of the storage tank body, and the opening direction of the feeding pipe opening may be perpendicular to the axis of the discharging pipe.

According to an exemplary embodiment of the present invention, the discharge unit may further include a branch scavenge line communicating with the discharge pipe, the branch scavenge line being connected with the discharge pipe between the discharge pipe opening and the feed pipe opening, and an included angle between the branch scavenge line and the discharge pipe opening may be an obtuse angle.

According to an exemplary embodiment of the invention, the vertical split cylinder further comprises a sweep air pipe and an air-supporting air pipe which are communicated with the cylinder body, the sweep air pipe can be connected with the sweep branch pipe through a pipeline, and the air-supporting air pipe can be connected with the air-supporting pipe opening through a pipeline.

According to an exemplary embodiment of the invention, a scavenging air pipe control valve can be arranged on the scavenging air pipe, and the scavenging air pipe control valve can enable the scavenging air pipe to be in a circulating or closed state; an air-assisting air pipe control valve can be arranged on the air-assisting air pipe, and the air-assisting air pipe control valve can enable the scavenging air pipe to be in a circulating or closed state.

According to an exemplary embodiment of the present invention, the discharge hole of the storage tank body may be further provided with a blanking control valve. The blanking control valve can be in a circulating or closed state; further, the flow speed or flow of barite powder flowing out of the discharge hole can be adjusted.

According to an exemplary embodiment of the present invention, a discharge control valve may be further disposed on the discharge pipe. The discharge control valve can enable the discharge pipe to be in a flowing or closed state; further, the flow speed or flow rate of the barite powder flowing out of the reactor can be adjusted.

According to an exemplary embodiment of the present invention, a pressure adjusting unit may be further disposed between the gas source inlet pipe and the external gas source to adjust a pressure flowing from the external gas source into the gas source inlet pipe. The pressure adjusting unit may include a pressure reducing valve, and the gas source inlet pipe and the external gas source may be connected through a pipeline, and the pressure reducing valve may be provided on the pipeline.

According to an exemplary embodiment of the present invention, the bottom of the cylinder may be further provided with a drain outlet to discharge condensed water in the gas.

According to an exemplary embodiment of the present invention, the vertical gas cylinder may further include a vent pipe communicated with the cylinder body, the gas in the cylinder body may be communicated to the outside through the vent pipe, and the vent pipe may further be provided with a vent pipe control valve. The emptying pipe control valve can enable the emptying pipe to be in a circulating or closed state, and further, the flow or the flow speed of the gas flowing out of the emptying pipe can be adjusted.

According to an exemplary embodiment of the present invention, the vertical split cylinder may further include a relief valve and a relief valve communication pipe that are sequentially connected and finally connected to the cylinder block.

According to an exemplary embodiment of the invention, the ring pipe may include a first sub ring pipe, a second sub ring pipe, and at least one second air outlet arranged on the second sub ring pipe, the first air outlet is located on the first sub ring pipe, the lower portion of the storage tank body is further provided with at least 1 air inlet, the number of the air inlets is the same as that of the second air outlets and can be in one-to-one correspondence, and the air inlets and the second air outlets in the corresponding relationship can be communicated through pipelines.

According to an exemplary embodiment of the invention, the weighing system may further comprise an earthing device capable of connecting the at least tank scale to earth.

According to an exemplary embodiment of the present invention, the tank scale may further comprise a second scale platform disposed below the first scale platform.

According to an exemplary embodiment of the present invention, the tank scale may further comprise a limiting device disposed between the first and second weighing platforms.

According to an exemplary embodiment of the present invention, the junction box may be arranged on the first scale platform, on the second scale platform or between the first and second scale platforms.

According to an exemplary embodiment of the present invention, the fixed support may comprise a fixing bolt, the lower end of which is connected with the upper top of the first scale platform.

According to an exemplary embodiment of the present invention, the fixing support may include fixing bolts, the upper platform of the first platform has at least three through holes, the number of the through holes is the same as that of the fixing bolts, the through holes and the fixing bolts can correspond to each other one by one, and the lower section of each fixing bolt can be inserted into and fixed in the corresponding through hole.

According to an exemplary embodiment of the present invention, the diameter of the through hole is greater than the diameter of the fixing bolt, the tank scale may further include at least three limiting protection members, the number of the limiting protection members is the same as the number of the fixing bolts, the limiting protection members and the fixing bolts can correspond to each other one by one, and each limiting protection member can be inserted into a gap between the corresponding fixing bolt and the through hole.

According to an exemplary embodiment of the present invention, the limit protector may include a hollow tube that can be fitted over the corresponding fixing bolt and inserted into the through-hole.

According to an exemplary embodiment of the present invention, the limit protector may further include a nut, an internal thread of which may be fitted with an external thread of the corresponding fixing bolt, and in a state where the hollow tube is fitted over the fixing bolt, the nut may be screwed into and fasten the hollow tube from an upper end of the fixing bolt.

According to an exemplary embodiment of the present invention, the tank scale may further include a plurality of lifting members disposed on a side surface of the second platform to facilitate lifting of the tank scale.

According to an exemplary embodiment of the invention, both ends of the transmission cable may comprise an aviation plug.

According to an exemplary embodiment of the present invention, the grounding device may include a grounding body unit and a lead-out member, wherein the grounding body unit may include at least one of a horizontal grounding body and a vertical grounding body; a lead-out member can connect the grounding body unit with the at least one tank scale.

According to an exemplary embodiment of the present invention, the lead-out member may include a terminal stud, a terminal nut, and a lead-out wire, the terminal stud having a lower end connected to the ground body and an upper end connected to the terminal nut, the terminal nut being connected to the at least one tank scale through the lead-out wire.

Compared with the prior art, the beneficial effects of the invention can include: the systems of the invention can be fully matched to generate good synergistic effect; the multi-type tank bodies are used in combination, so that the supply requirement of a large amount of oil-based drilling fluid can be met; the tank body of each tank has good structure and integral strength, and the structural design of the tank body is scientific and reasonable, safe and reliable; the mixing funnel and the venturi assembly are matched with each other to generate pressure difference, so that required materials can be well added into the drilling fluid in the fluid preparation process of the drilling fluid, no blockage is caused in the adding process, and the solid phase carrying capacity is high. Meanwhile, the barite powder storage system can efficiently finish loading and unloading operations, can reduce the use number of barite powder storage tanks to the maximum extent, and can meet the narrow working condition requirement of a well cementation operation site of an oil field. Moreover, the weighing system has the advantages of high metering precision, strong process control, convenience in transportation, long service life and the like, and can reduce the labor intensity of well cementation operation, improve the working efficiency and save the cost.

Drawings

The above and other objects and features of the present invention will become more apparent from the following description taken in conjunction with the accompanying drawings, in which:

FIG. 1 shows a schematic diagram of a drilling fluid reserve workstation in an exemplary embodiment of the invention;

FIG. 2 illustrates a schematic view of a rotor system in an exemplary embodiment of the invention;

FIG. 3 shows a schematic view of a portion of a slurry tank in an exemplary embodiment of the invention;

FIG. 4 shows a schematic view of a charge pump in an exemplary embodiment of the invention.

FIG. 5 shows a schematic structural view of a barite powder storage module in an exemplary embodiment of the present invention;

FIG. 6 shows a schematic structural view of a loading unit in an exemplary embodiment of the invention;

fig. 7 shows a schematic structural view of a blanking unit in an exemplary embodiment of the invention;

FIG. 8 shows a schematic view of a vertical split cylinder in an exemplary embodiment of the invention;

FIG. 9 shows a schematic structural view of a grommet in an exemplary embodiment of the present invention;

FIG. 10 is a schematic illustration of a tank scale in positional relationship to a base in an exemplary embodiment of the invention;

FIG. 11 shows a schematic view of a weighing system in an exemplary embodiment of the invention.

Description of the main reference numerals:

110-a mud pot, 111-a first base, 112-a first perimeter side wall, 113-a first roof, 114-a first manhole cover assembly, 120-a sand pump; 210-second base, 220-second peripheral side wall, 221-first drain pipe assembly, 230-second top plate, 231-first inlet pipe assembly, 240-middle partition, 250-first liquid level gauge assembly, 260-first sand removal door assembly, 270-first stirrer; 310-suction line, 320-pump body, 330-venturi component, 331-first tube, 332-second tube, 333-third tube, 340-discharge line, 350-mixing funnel, 360-electric control system, 370-base skid, 380-discharge short tube, 390-junction short tube; 410-a material storage tank body, 411-a gasification bed, 412-a discharge port, 413-a discharge control valve and 414-a manhole; 420-exhaust pipe, 421-exhaust control valve; 430-a feeding unit, 431-a filter, 432-a feeding pipe, 433-a feeding control valve; 440-discharge unit, 441-discharge pipe, 441 a-discharge pipe orifice, 441 b-wind-assisting air inlet, 441 d-discharge control valve, 442-sweep line branch pipe; 450-vertical gas separation cylinder, 451-cylinder body, 452-gas source inlet pipe, 453-circular pipe communicating pipe, 454-scavenging line gas pipe, 455-air-assisted gas pipe, 456-emptying pipe, 457-sewage outlet, 458 a-safety valve, 458 b-safety valve communicating pipe, 459-pressure gauge, 461-gas inlet, 462-first sub circular pipe, 463-second sub circular pipe, 464-first gas outlet and 465-second gas outlet; 470-a base; 510-tank scale, 511-first weighing platform, 512-second weighing platform, 513-limit protection piece, 514-junction box, 515-fixed supporting piece, 516-hoisting component, 520-transmission cable and 530-weighing control device.

Detailed Description

In the following, the drilling fluid reserve workstation of the invention will be described in detail in connection with the figures and exemplary embodiments. It should be noted that "first", "second", "third", "fourth", "fifth", "sixth", etc. of the present invention are only for convenience of description and distinction, and do not indicate a sequential order or relative importance. Meanwhile, the terms "front", "rear", "left" and "right" of the present invention are merely used for convenience of description and constituting a relative orientation or positional relationship, and do not indicate or imply that the components referred to must have the specific orientation or position.

In an exemplary embodiment of the present invention, as shown in fig. 1, the drilling fluid storage workstation may include a barite powder storage system, and a slurry rotating system, a slurry distributing system, a drilling fluid modulating system, a drilling fluid storage system and a circulating system, which are sequentially arranged along a fluid flow direction; the direction of the arrows in the figures may indicate one direction of flow of the fluid or the direction of flow of the material. Wherein,

the rotary slurry system comprises a rotary slurry tank, and the rotary slurry tank can contain external basic drilling fluid.

The slurry preparation system comprises a slurry preparation tank which can receive the basic drilling fluid conveyed from the slurry conversion tank.

The drilling fluid modulation system can mix the basic drilling fluid and the ingredients in the slurry preparation tank to obtain the target drilling fluid.

The drilling fluid storage system includes at least 1 drilling fluid storage tank, each drilling fluid storage tank capable of storing a target drilling fluid.

The circulation system is capable of circulating the drilling fluid in the drilling fluid storage tank and comprises at least one circulation pump.

The barite powder storage system is capable of providing barite powder to a drilling fluid conditioning system.

In this embodiment, fig. 2 shows a schematic view of a rotor system according to the invention. The slurry transfer system may include a slurry tank 110 and a sand pump 120, which may include an explosion-proof sand pump.

As shown in fig. 2, the slurry tank 110 may include: the box-type tank body main structure is enclosed by a first base 111, a first peripheral side wall 112 and a first top plate 113.

The main structure of the slurry tank 110 can be determined according to actual requirements, such as a rectangular box-type metal tank body. The size of the main body structure of the slurry tank can be set according to actual requirements, for example, the length is 1-3 m, the width is 1-2.5 m, the height is 0.5-1.5 m, and the effective volume can be 2-5 m³。

The first base 111 may be a bottom portion of a box-type structure of the slurry tank 110, which may have a rectangular-like structure with a certain thickness. The thickness of the first base 111 can be determined according to practical requirements, such as 100-200 mm. First base 111 mainly comprises base skeleton and the bottom plate of setting on the base skeleton, and first base 111 level sets up subaerial and can bear the weight of whole mud turning jar and the drilling fluid in the mud turning jar. The base framework of the first base 111 may be formed by connecting channel steel according to a certain structure, and the bottom plate may be made of steel plate, but the invention is not limited thereto, as long as a base having a certain thickness and capable of supporting the weight of the slurry tank and the drilling fluid in the slurry tank is formed. Further, lifting lugs are further arranged on the first base 111 near the left side and the right side respectively for facilitating moving of the slurry tank, for example, the left side and the right side can be provided with two lifting lugs respectively. Further, as shown in fig. 2, the first base 111 may further have a protruding section, and the sand pump 120 may be placed on the protruding section and may be fixedly connected to the protruding section, for example, an i-steel may be used to fixedly connect the sand pump 120 and the protruding section, but the fixed connection manner of the two is not limited thereto, as long as the connection manner of the sand pump and the base can be achieved.

The first peripheral sidewall 112 may include four rectangular sidewalls of the front, rear, left, and right of the slurry tank 110, wherein the front sidewall and the rear sidewall are disposed parallel to each other, and the left sidewall and the right sidewall are disposed parallel to each other. The first peripheral sidewall 112 is vertically disposed on the first base 111 and is fixedly and hermetically connected therewith. First week lateral wall 112 material can be the flute steel sheet, and it can increase the intensity of week lateral wall, makes first week lateral wall 112 be difficult for taking place to warp, and the thickness of the flute steel sheet that constitutes first week lateral wall 112 can be 3 ~ 7mm, and the angle of flute can be 30 ~ 50, and the flute interval can be 500 ~ 550mm, and the degree of depth of flute can be 80 ~ 90mm, and for example thickness is 4mm, and the flute angle is 45, and the flute interval 520mm, the degree of depth 85mm of flute. Of course, the present invention is not limited thereto, and other steel plates may be used for the first peripheral side wall 112 as long as the first peripheral side wall is connected to the first base 111 and the first top plate 113 and has a certain strength. Further, a drain outlet can be further arranged at a position, close to the bottom of the tank, on the first peripheral side wall 112, the drain outlet can be provided with a circular drain outlet of a ball valve, the switch can be conveniently used for draining, and the drain outlet can be of other structures as long as the switch can be conveniently used for draining and the sealing effect can be achieved.

The first top plate 113 is a box top part of the box-type structure of the slurry tank 110, and the first top plate 113 is fixedly and hermetically connected with the upper end of the first peripheral side wall 112. The top plate and the base can be arranged in parallel, and the top plate is also of a similar rectangular structure. The first top plate 113 may be made of a checkered plate. Further, as shown in fig. 2, two first manhole cover assemblies 114 may be disposed on the first top plate 113, and the two manhole cover assemblies may be disposed on the first top plate 113 in a diagonal direction to increase a distance between the two manhole cover assemblies, thereby facilitating simultaneous use and operation. Further, the first manhole cover assembly 114 may be a double hinge structure with a cover plate, one end of which is hinged to the first top plate 113, and a movable handle is provided on the cover plate. The material of manhole cover subassembly apron also can be the checkered plate, the square that the size of manhole can be, the manhole cover can be supported with the angle steel in the below all around, first manhole cover subassembly opening edge department is equipped with perpendicular upwards just has the manger plate strip of take the altitude with the roof to prevent that the rainwater from getting into in the mud jacking jar. Furthermore, the first top plate 113 may be provided with a plurality of openings, and drilling fluid in the mud tanker can be supplied to the mud tank from the openings.

The sand pump 120 may include a suction port and a discharge port. The slurry tank 110 and the sand pump 120 may be connected by a connection pipe, i.e., one end of the connection pipe may be connected with the slurry tank 110 and the other end may be connected with the sand pump, and the connection pipe may be provided with a control valve, such as a butterfly valve. The sand pump can be through the drilling fluid of connecting pipe suction in the commentaries on classics thick liquid jar to carry out through the leakage fluid dram.

In an embodiment, fig. 3 shows a schematic diagram of a partial structure of a slurry preparation tank, a tank body of the slurry preparation tank may be provided with an intermediate partition 240, the intermediate partition 240 may separate the slurry preparation tank into two sub-tank bodies, the two sub-tank bodies may have the same structure, and components provided on the two sub-tank bodies may also be the same, so fig. 3 mainly shows a schematic diagram of a structure of one sub-tank body.

As shown in fig. 3, the slurry tank may include: a box-type tank body structure enclosed by a second base 210, a second peripheral side wall 220 and a second top plate 230. Wherein, 2 sets of the first liquid inlet pipe assemblies can be arranged on the second top plate 230, and 2 sets of the first liquid outlet pipe assemblies are arranged at the lower part or bottom of the second peripheral wall 220. Each set of the first inlet duct assemblies may comprise at least 1 first inlet duct assembly 231 and the first inlet duct assemblies 231 may be provided on the top plate adjacent the edge. Each set of first drain assemblies may include at least 1 first drain assembly 221, the first drain assembly 221 may be disposed on the second peripheral wall 220 adjacent to the base of the tank body, the drain assembly may be secured to the peripheral wall with a clamp, and the first inlet assembly and the first drain assembly may each include a regulating valve, such as a butterfly valve.

The slurry preparation tank also comprises two groups of first liquid level meter assemblies, two groups of first sand cleaning door assemblies and two groups of first stirrers, wherein the two groups of first liquid level meter assemblies, the two groups of first sand cleaning door assemblies and the two groups of first stirrers respectively correspond to the two sub-tank bodies, and the number of corresponding assemblies or devices in each group is not less than 1.

In this embodiment, the drilling fluid storage tank may comprise: the box-type tank body main body structure is formed by a third base, a third circumferential side wall and a third top plate in a surrounding mode. Wherein, can be provided with at least 1 second inlet pipe subassembly on the third roof, third week lateral wall lower part or bottom are provided with at least 1 second drain assembly. The main structure of the drilling fluid storage tank and the slurry preparation tank can be the same or similar except that no intermediate partition plate is arranged.

The quantity of second inlet tube subassembly can be 1 to can set up and be close to marginal position on the third roof, the quantity of second flowing back pipe subassembly can be 2, and can set up respectively in the relative two cliffs in third week lateral wall and be close to the position of jar body base, the flowing back pipe subassembly can be fixed on week lateral wall with the clamp, can all be provided with the governing valve on second inlet tube subassembly and the second flowing back pipe subassembly, for example butterfly valve.

The drilling fluid storage tank may further comprise at least 1 second level gauge assembly, at least 1 second agitator.

In this embodiment, both the slurry preparation tank and the drilling fluid storage tank may be rectangular box-type metal tanks. The size of the tank body can be as follows: the length is 8-15 m, the width is 2-4 m, the height is 2-3.5 m, and the effective volume is 50-70 m³。

In the present embodiment, the shape and structure of both the second base 210 and the third base may be the same or similar, the shape and structure of the second circumferential side wall 220 and the third circumferential side wall may be the same or similar, and the shape and structure of the second top plate 230 and the third top plate may be the same or similar.

Taking the second base 210 as an example, the second base 210 may be a rectangular-like structure with a certain thickness to serve as a bottom portion of the box-type structure. The second base 210 can be horizontally disposed on the ground and can bear the weight of the whole tank body and drilling fluid in the tank, the second base 210 can be mainly composed of a base framework and a bottom plate disposed on the base framework, and the framework can be formed by fixedly connecting a main beam, longitudinal tie bars and triangular reinforcing ribs. The second base 210 may further be provided with a lug near the left and right ends for facilitating the movement of the slurry tank.

Taking the second peripheral side wall 220 as an example, the second peripheral side wall 220 is four rectangular side walls of the slurry tank, namely a front side wall, a rear side wall, a left side wall and a right side wall, wherein the front side wall and the rear side wall are arranged in parallel, and the left side wall and the right side wall are arranged in parallel. The second peripheral sidewall 220 may be vertically disposed on the second base 210 and fixedly and sealingly coupled thereto. The second circumferential side wall is made of corrugated steel plates, and the strength of the circumferential side wall can be increased by adopting the corrugated steel plates as the circumferential side wall, so that the circumferential side wall is not easy to deform.

Taking the second top plate 230 as an example, the second top plate 230 is a tank top part of the slurry tank, and the second top plate 230 is fixedly and hermetically connected with the upper end of the second peripheral side wall 220. Here, the top plate and the base are arranged in parallel, and the top plate is also of a quasi-rectangular structure. The second top plate 230 includes a top plate frame and a tread plate laid on the top plate frame.

In this embodiment, respirators may be disposed at positions near four corners of the rectangular structures of the second top plate 230 and the third top plate, and the shapes of the respirators may be circular or other shapes.

Further, a manhole cover assembly for facilitating the operator to enter the storage tank may be further provided on the second top plate 230 and the third top plate. The structure of the manhole cover component can be the same as that of a first manhole cover component arranged on the slurry transferring tank, for example, the manhole cover component can be a double-hinge connecting structure with a cover plate, one end of the cover plate is hinged with the top plate, and the cover plate is provided with a movable handle. Here, the number of the manhole cover assemblies may be two, and the manhole cover assemblies may be respectively disposed on the top plates corresponding to the two sub-tanks. The cover plate of the manhole cover component can be a checkered plate, and angle steel can be used as supports below the periphery of the manhole cover. A manhole inner ladder can be arranged in the opening of each manhole cover component, so that operating personnel can conveniently go in and out of the slurry distribution tank.

Further, railings may be further installed at the peripheral edges of the second top board 230 and the third top board to ensure the safety of the operator when performing work on the top boards.

Further, water bars with the height of 3-5 cm perpendicular to the top plate can be arranged at the edges of all the openings on the second top plate 230 and the third top plate to prevent rainwater from entering the slurry distribution tank.

In this embodiment, the first level gauge assembly 250 and the second level gauge assembly may have the same structure, for example, they may include a connecting member, a gauge assembly and a float gauge, the connecting member connects the lower end of the float gauge with the inside of the tank, and the gauge assembly fixes the upper end of the float gauge on the top plate to facilitate the display of the drilling fluid level in the tank.

In this embodiment, the slurry preparation tank may include two first sand cleaning door assemblies 260, and the two sand cleaning door assemblies 260 may be respectively disposed on the partial circumferential side walls corresponding to the two sub-tank bodies at positions close to the bottom of the tank.

The drilling fluid storage tank may further comprise at least 1 second sand cleaning door assembly, e.g. 2, arranged on the third circumferential side wall, 2 sand cleaning door assemblies may be located next to the two second drain assemblies.

First cleaning gate assembly 260 may be hammered, e.g., square hammered; the second sanddoor assembly may be of the hammer or panel type, such as a square panel type. Wherein,

the hammering type sand cleaning door assembly can comprise a sewage draining outlet, a door strip (capable of fixing the double-hinge cover plate and the tank body), the double-hinge cover plate and sealing rubber. Wherein, the opening base of drain and jar bottom surface parallel and level or be less than the interior bottom surface of the jar body a little, two close page or leaf apron one side and jar body hinged, two close page or leaf apron and drain carry out fixed connection through the doorstrip, and sealing rubber sets up and guarantees sealedly not to leak between drain and two close page or leaf apron, still is provided with the handle that conveniently opens on the two close page or leaf apron.

The masking plate type sand cleaning door component can comprise a sewage draining outlet, a masking plate, a connecting bolt and sealing rubber. Wherein, the opening of drain and the interior bottom surface parallel and level of reserve jar interior bottom surface or slightly be less than the interior bottom surface of jar body, the mask carries out fixed connection through the bolt with the drain, and sealing rubber sets up and guarantees sealed not leaking between drain and mask.

In this embodiment, a first stirrer 270 may be installed on each of the top plates of the two sub-tanks of the slurry tank.

At least one second stirrer, for example 3, may be mounted on the roof of the drilling fluid storage tank. The first stirrer and the second stirrer may have the same structure.

For example, the base of the stirrer can be arranged on a steel beam with enough strength on the top plate, and a vibration isolation rubber pad is arranged between the stirrer base and the steel beam to prevent the stirrer from vibrating in the working process. The agitator can include the motor and by motor drive's upper stirring impeller and lower floor's stirring impeller, and wherein, upper stirring impeller's diameter is greater than lower floor's stirring impeller's diameter, and the interval is 800 ~ 1200mm between upper stirring impeller and the lower floor's stirring impeller, and lower floor's stirring impeller is apart from tank bottoms 150 mm. In addition, the lower end of the stirring impeller extending into the tank can be provided with a centering sleeve, and the centering sleeve is welded with the tank bottom, so that the stirring impeller is flexible in rotation and does not swing during transportation.

In this embodiment, the slurry preparation tank and the drilling fluid storage tank can be provided with one or more than two movable floor walking ladders from the ground to the tank surface according to the requirement, the ladder can be provided with double-side handrails, the lower parts of the handrails can be fixed and provided with lock pins, and the included angle between the ladder and the ground is not more than 60 degrees. Meanwhile, the static eliminator can be arranged on the ground at the ladder opening of the movable floor walking ladder, so that an operator can eliminate static electricity carried by the operator through the static eliminator, and potential safety hazards caused by the static electricity are avoided.

In this embodiment, the slurry preparation tank and the drilling fluid storage tank can be further provided with an explosion-proof lighting lamp group, and the distance between the explosion-proof lighting lamp group and the top plate is not less than 2.3 m. The peripheral side wall of the slurry preparation tank can be also provided with an explosion-proof electric cabinet, a cable groove and an explosion-proof plug-in unit. The explosion-proof electric cabinet can provide power for the stirrer and the illuminating lamp set through cables. The main cable line on the surface of the tank can adopt a cable wiring groove, the branch line can adopt a pipe penetrating mode, the wiring groove can be arranged on one side outside the tank, and a cable clamp is arranged in the groove. Meanwhile, each slurry preparation tank is provided with a grounding protection device.

In this embodiment, in order to prevent the drilling fluid from corroding the inner wall of the tank body, all the inner walls of the slurry transferring tank, the slurry preparing tank and the drilling fluid storage tank can be provided with a compact anticorrosive layer composed of a first anticorrosive layer, a second anticorrosive layer and a third anticorrosive layer. The first anticorrosive layer can be epoxy zinc-rich paint, the second anticorrosive layer can be epoxy mica iron paint, and the third anticorrosive layer can be acrylic polyurethane paint. The spray painting of the anticorrosive coating is regular, the phenomena of peeling, sagging, wrinkling, bleeding, bubbling and the like do not exist, and the total thickness of the anticorrosive coating can be more than or equal to 170 mu m. The coating of the anticorrosive layer is to spray paint in dry air, strictly spray in rain fog, and stop spraying when the air or surface temperature is lower than 5 ℃ or higher than 50 ℃ and the humidity is higher than 80%. The coating of each layer of paint is carried out after quality inspection and confirmation, and the inspection contents comprise surface pretreatment or adhesion and dry curing of the previous layer of paint. However, the present invention is not limited thereto, and the anticorrosive coating may have other structures as long as the corrosion prevention of the inner wall of the can body can be achieved.

In this embodiment, the drilling fluid preparation system includes at least 1 charge pump, and the charge pump can mix the basic drilling fluid in the slurry preparation tank with the batching to obtain the target drilling fluid. The ingredients may include additives for drilling fluids such as barite powder, limestone, bentonite, and the like.

FIG. 4 is a schematic view of the charge pump of the present invention, wherein (a) is a schematic front view and (b) is a schematic top view. The charge pump may include: a suction line 310, a pump body 320, a venturi assembly 330, and a discharge line 340, which are connected in sequence in the drilling fluid flow direction, and a mixing funnel 350 disposed above the venturi assembly. Wherein,

suction line 310 is capable of receiving and flowing the base drilling fluid in the proportioning tank. Further, a regulating valve may be provided on the suction line 310 for controlling the inflow of drilling fluid.

The pump body 320 is capable of driving mud (drilling fluid) flow in the pipeline.

As shown in fig. 4 (a), the venturi assembly 330 may include a first tubular body 331, a second tubular body 332, and a third tubular body 333 disposed above the first tubular body 331, which are sequentially connected and finally connected to the discharge line 340. Wherein, one end of the first tube 331 is connected to the pump main body 320. The pipe diameter of the second pipe body 332 gradually increases along the flowing direction of the drilling fluid, and the pipe diameter of the liquid inlet end of the second pipe body 332 is smaller than that of the first pipe body 331, namely, the through-flow cross section of the drilling fluid is reduced in the process that the drilling fluid flows into the second pipe body 332 from the first pipe body 331. The lower end of the third pipe 333 communicates with the first pipe 331. The first tube 331, the second tube 332, and the second tube 333 are hollow and are connected to each other. The first pipe 331 is horizontally connected to the second pipe 332. The second pipe 333 is perpendicularly connected to the first pipe 331.

The mixing funnel 350 is capable of adding ingredients to the venturi pipe 330, and is provided at the bottom thereof with a discharge hole connected to the upper end of the third tube 333. The mixing funnel 350 may be disposed above the venturi assembly 330. The mixing funnel 350 may be provided in a conical configuration. The mixing hopper may be used to add desired additives to the drilling fluid, such as barite powder, limestone, and the like. And the additive enters the drilling fluid in the pipeline after being added into the mixing funnel and passing through the funnel discharge port and the third pipe body.

In the above, when the venturi assembly provided by the present invention is matched with the mixing funnel, when the drilling fluid flows in the body pipe, the dynamic pressure reaches the maximum value at the joint of the first pipe body 331 and the second pipe body 332 (the narrowest part of the pipe), the static pressure reaches the minimum value, and the speed of the drilling fluid rises due to the reduction of the cross-sectional area of the through-flow. The entire drilling fluid is subjected to a pipe reduction process at the same time, and the pressure is reduced at the same time, thereby generating a pressure difference. The generated pressure difference provides an external suction force for the drilling fluid, and the suction force can suck the materials added from the mixing hopper into the pipeline to be mixed with the drilling fluid, so that the materials are favorably added. And, due to the pressure difference, a jet force can be formed after the first pipe body 331 enters the second pipe body 332, and the jet force can generate a thrust to accelerate the entering of the materials and the flowing of the drilling fluid in the pipeline.

In this embodiment, the charge pump may further include: an electronic control system 360, a base sled 370 capable of positioning the pump body 320 and the electronic control system 360. Wherein,

the electronic control system 360 may be connected to the pump body 320 by a cable for powering the pump body. The electronic control system 360 may include a vertical buck start device.

Base sled 370 may be made of a metallic material.

In this embodiment, venturi assembly 330 further includes a feed valve disposed between the third tube and the connecting end of the mixing funnel. The feed valve can control whether the additive in the mixing hopper is added into the drilling fluid.

In this embodiment, the charge pump may further include a suction nozzle stub connected to the suction line 310. The suction nozzle stub may be detachably provided at an end of the suction line 310 remote from the pump main body. The length of the suction port short pipe can be short and can be detachably arranged, and the maintenance of the single pump can be facilitated. For example, the length of the suction nozzle stub may be set to 0.3m to 0.8m, and further, may be set to 0.5 m. The suction spool may be flanged to the suction line 310.

In this embodiment, the charge pump may also include a discharge spool 380. A discharge nipple is removably disposed at an end of discharge line 340 distal to venturi assembly 330. One end of the discharge stub 380 is connected to the discharge line 340, and the other end can be connected to the drilling fluid storage tank liquid inlet assembly through a pipeline. The provision of the bleed spool 380 may facilitate system maintenance. Further, as shown in fig. 4 (b), a connection short pipe 390 provided with a regulating valve may be provided between the discharge short pipe 380 and the discharge line 340. A butterfly valve may be used for opening and closing the discharge line 340. The discharge line 340 and the junction pipe 390, and the junction pipe 390 and the discharge pipe stub 30 may be flange-connected. The discharge stub 380 may be connected to the outside by a flange.

In this embodiment, the suction line 310 and the pump body 320, the pump body 320 and the venturi assembly 330, the venturi assembly 330 and the discharge line 340, and the mixing funnel 350 and the venturi assembly 330 may be connected by flanges.

In this embodiment, the charge pump may further comprise a transfer elbow connected to the discharge line for transferring drilling fluid to a higher location than the discharge line in the direction of the plumb line.

In this embodiment, the charge pump may further include a step ladder. One end of the step ladder is arranged on the ground, and the other end of the step ladder is lapped on the mixing hopper.

In this embodiment, the drilling fluid storage system may include tens to hundreds of drilling fluid storage tanks. Accordingly, the drilling fluid storage tanks can be divided into a plurality of groups, for example, 2-6 groups. The same type of drilling fluid, such as oil-based drilling fluid or water-based drilling fluid, can be stored in the tank bodies in each set of drilling fluid storage tanks.

For example, each set of drilling fluid storage tanks may include two rows of drilling fluid storage tanks arranged in parallel, and the number of each row of tanks may be greater than 2.

In this embodiment, the circulation system further comprises at least 2 sets of circulation lines; the number of the circulating line groups is the same as the number of the groups of the drilling fluid storage tanks and can correspond to one another, and the number of the circulating line groups is the same as the number of the circulating pumps and can correspond to one another, namely, one group of the drilling fluid storage tanks is provided with one circulating pump and one circulating line group. Each circulating pipeline group comprises a first pipeline and a second pipeline, the liquid inlet end of the circulating pump is connected with the first pipeline, and the liquid discharge end of the circulating pump is connected with the second pipeline.

The first type of line can be connected with the second drainage pipe assembly of each tank in the corresponding drilling fluid storage tank group, and the first type of line can receive drilling fluid under the action of the circulating pump. The second type of pipeline can be connected with the second liquid inlet pipe assembly of each tank body in the corresponding drilling fluid storage tank group, and the second type of pipeline can output drilling fluid under the action of the circulating pump. Furthermore, under the action of the first type pipeline, the second type pipeline and the circulating pump, the drilling fluid in the drilling fluid storage tank can realize circulating operation.

The first type of line may be disposed at a lower portion or a bottom portion of the drilling fluid storage tank body so as to be connected with the second drain pipe assembly, and the second type of line may be disposed at an upper portion of the drilling fluid storage tank body so as to be connected with the second liquid inlet pipe assembly.

Further, the drilling fluid storage workstation can further comprise a loading pipeline connected with the second type pipeline so as to discharge the target drilling fluid circulated from the drilling fluid storage tank to the outside. The drilling fluid storage workstation further comprises an emergency pool connected with the second type pipeline.

Furthermore, the first type pipelines in the two or more circulating pipeline groups can be connected through connecting pipelines provided with regulating valves; the second type pipelines in the two or more circulating pipeline groups are also connected through connecting pipelines provided with regulating valves.

In this embodiment, the drilling fluid preparation system further includes at least 1 modulation line group, and the number of the modulation line groups is the same as the number of the slurry preparation tanks and can correspond to one another. The number of the groups of the modulation line groups is the same as the number of the feeding pumps and can correspond to one another. Namely, a slurry preparation tank is provided with a charging pump and a modulating pipeline set. Each modulation pipeline set includes a third type pipeline and a fourth type pipeline. The suction line of the charge pump may be connected to the third type line and the discharge line may be connected to the fourth type line.

The third type of pipeline can also be connected with a liquid discharge pipe assembly in the corresponding slurry preparation tank group, and the third type of pipeline can receive the drilling liquid in the slurry preparation tank under the action of the feed pump. The fourth type pipeline can also be connected with a liquid inlet pipe assembly in the corresponding slurry preparation tank, and the fourth type pipeline can output the modulated drilling fluid under the action of the feed pump. And under the action of the third pipeline, the fourth pipeline and the feed pump, the drilling fluid in the slurry distribution tank can realize feed operation.

The third type of pipeline can be arranged at the lower part or the bottom of the slurry distribution tank body so as to be connected with the first liquid discharge pipe assembly, and the fourth type of pipeline can be arranged at the upper part of the slurry distribution tank body so as to be connected with the first liquid inlet pipe assembly.

In this embodiment, each third type of line can also be connected to a drain assembly of not less than 1 drilling fluid storage tank. For example, 1 third type pipeline can be provided with a liquid inlet corresponding to a liquid outlet pipe assembly on not less than 1 drilling fluid storage tank.

Each fourth type of pipeline can also be connected with a liquid inlet pipe assembly of not less than 1 drilling fluid storage tank. For example, 1 fourth type pipeline can be provided with a liquid outlet corresponding to the liquid inlet pipe component on not less than 1 drilling fluid storage tank.

Therefore, each charging pump can also pump the drilling fluid in any adjacent drilling fluid storage tank, the ingredients added through the mixing hopper are further modulated, and then the ingredients can be placed into any drilling fluid storage tank.

Further, the third type of pipeline may also be connected with the first type of pipeline through a connecting pipe provided with a regulating valve. The fourth type of pipeline can also be connected with the second type of pipeline through a connecting pipe provided with a regulating valve.

In this embodiment, the drilling fluid storage workstation further comprises a weighting system comprising at least 1 weighting pump, and at least 1 set of weighting lines. The weighting pumps and the weighting pipeline groups are the same in number and can correspond to one another, namely one weighting pump corresponds to one weighting pipeline group. Each of the weighted line sets includes a fifth type of line and a sixth type of line. The liquid inlet end of the weighting pump is connected with a fifth pipeline, and the liquid discharge end of the weighting pump is connected with a sixth pipeline. Wherein, the structure of the weighting pump can be the same as that of the feeding pump.

At least 1 barite powder storage module in the barite powder storage system may provide barite powder to the mixed material of the weighted pump, for example, an outlet pipe provides barite powder to the mixing drain through a pipeline.

Each weighting pump and weighting pipeline group can correspond to a group of drilling fluid storage tanks, and the number of the storage tanks in each group is not less than 1.

The fifth type of line can be connected to the second drain assembly of each tank in the corresponding drilling fluid storage tank set, and the fifth type of line can receive drilling fluid under the action of the weighted pump. The sixth type of pipeline can be connected with the second liquid inlet pipe assemblies of each tank body in the corresponding drilling fluid storage tank group, and the sixth type of pipeline can output drilling fluid under the action of the weighting pump. Furthermore, the weighted pump can mix the target drilling fluid in the drilling fluid storage tank with the barite powder through a fifth type pipeline group and a sixth type pipeline group to further modulate, and can return the modulated drilling fluid to the drilling fluid storage tank.

A fifth type of line may be provided at the lower or bottom of the drilling fluid storage tank body so as to be connected with the second drain pipe assembly, and a sixth type of line may be provided at the upper portion of the drilling fluid storage tank body so as to be connected with the second liquid inlet pipe assembly.

Furthermore, the fifth type pipelines in the two or more weighted pipeline groups can be connected through a connecting pipeline provided with a regulating valve; the sixth type pipelines in the two or more weighted pipeline groups are also connected through a connecting pipeline provided with a regulating valve.

In this embodiment, the circulating pump, the charge pump and the weighting pump can directly pump the drilling fluid to load, for example, the discharge end of the pump can be pumped to load through the slurry elbow assembly.

In the present embodiment, any two of the first-type line, the third-type line, and the fifth-type line may be connected therebetween by a connection line provided with a regulating valve.

Any two of the second-type line, the fourth-type line and the sixth-type line may be connected to each other by a connecting line provided with a regulating valve.

In this embodiment, the regulating valve of the present invention can make the corresponding liquid outlet, liquid inlet or pipeline in a circulating or closed state, and further, can adjust the flow rate of the corresponding fluid.

In this embodiment, the barite powder storage system may include: at least 1 barite powder storage module and 1 weighing module, for example, 2-5 barite powder storage modules can be included.

As shown in fig. 5, each barite powder storage module (also referred to as a barite powder storage tank) may include: the device comprises a material storage tank body 410, an exhaust pipe 420, a feeding unit 430, a discharging unit 440, an air distribution unit (not shown in the figure) and a base (not shown in the figure).

The storage tank body 410 can be used for storing materials, the storage tank body 410 can be a sealing device with a cavity structure, the storage tank body can comprise a first part, a second part and a third part which are arranged from top to bottom, the first part can be a hollow spherical segment, the second part can be a hollow cylinder, the third part can comprise a hollow inverted cone, and the storage tank body can comprise a sealing device which is enclosed by the three parts and has a cavity structure. At least one gasification bed 411, for example 2-5, and more for example 3, can be arranged on the third part of the storage tank body 410; the gasification bed 411 may be used for gasification, and may fluidize the powder material in the storage tank. As shown in fig. 5, a manhole 414 may be further provided on the storage tank 410 for operation and maintenance, a sampling hole may be further provided for sampling, and metal structural members such as a ladder lifting lug and a lower head may be further provided to improve the performance of the apparatus. The outer surface of the storage tank body 410 can be treated with anticorrosion measures, such as painting. As shown in fig. 7, the bottom of the storage tank 410 is further provided with a discharge port 412, the discharge port is further provided with a discharge control valve 413, and the discharge control valve 413 can enable the discharge port to be in a circulating or closed state, and further, the flow rate of the material flowing out from the discharge port can be adjusted.

As shown in fig. 5, the exhaust pipe 420 may penetrate through the tank wall of the storage tank body, the upper end of the exhaust pipe is disposed in the spherical segment portion at the upper portion in the storage tank body 410, the lower end of the exhaust pipe is disposed outside the tank, and the exhaust pipe 420 can exhaust the gas of the storage tank body 410. The portion of the exhaust pipe 420 outside the storage tank body may be provided with an exhaust control valve 421, and the exhaust control valve 421 may include a butterfly valve to control the exhaust pipe 420 to be in a circulating or closed state. Exhaust control valve 421 may also adjust the amount of flow of exhaust gas from the exhaust pipe. The exhaust pipe is arranged on the pipe body outside the material storage tank body and can be provided with a safety valve and a pressure gauge. The utility model discloses a storage tank body, including blast pipe and storage tank body, the setting of blast pipe and storage tank body inner wall can also set up the lacing wire between the blast pipe and the storage tank body inner wall, and the lacing wire can level setting, vertical setting or the setting of other directions, preferably, can be vertical direction setting to cause the jam after avoiding intraductal flourishing ash, caking.

The feeding unit 430 may be used to feed material into the storage tank body. Fig. 6 shows a schematic diagram of a horizontal placement of the feeding unit, the feeding unit 430 may include a filter 431 and a feeding pipe 432 connected in sequence according to a feeding direction, and a feeding control valve 433 may be further disposed on a pipe body of the feeding pipe 432 outside the material storage tank body. The filter 431 can be connected with an external material source through a pipeline and can filter impurities of introduced materials, and then the filtered materials enter the inside of the material storage tank body 410 through the material loading pipe 432. The material loading pipe 432 may be inserted into the storage tank body from a side of the bottom cone portion of the storage tank body 410 in a vertical direction, and the material loading pipe 432 may extend up to the upper spherical segment portion of the storage tank body. The material loading control valve 433 may include a butterfly valve to control the material loading unit 430 to be in a circulating or closed state, and may also adjust the flow rate of the material in the pipe. The end of the filter 431 connected to the outside source may be provided with a quick coupling.

The discharging unit 440 may be used to discharge the material in the material storage tank 410. As shown in fig. 7, the outfeed unit 440 may be disposed below the magazine body and include an outfeed pipe 441 and a scavenge line branch 442. The discharging pipe 441 is straight, pipe orifices at two ends of the discharging pipe 441 respectively form a discharging pipe orifice 441a and an air inlet 441b, and a feeding pipe orifice matched with the discharging port 412 of the storage tank body is further arranged on the pipe body of the discharging pipe 441. The outlet pipe 441 may also be provided with a discharge control valve 441d, which may include a butterfly valve to allow the outlet pipe 441 to be in a flow-through or closed state. The scavenge line branch 442 may be used to access a gas source to clean the effluent pipe, and the scavenge line branch 442 may be provided with a quick-connect. The air inlet 441b can be used for being connected with an air source to clean the discharging pipe, and the air inlet can be provided with a quick connector.

The gas distribution unit can be used for distributing gas required by the operation of the device. The air distribution unit may include a pressure adjusting unit, a vertical separation cylinder 450, and a loop pipe, which are connected in sequence through a pipeline. The pressure regulating unit may include a pressure reducing valve, which may be connected to an external gas source through a pipeline and reduces the pressure of the introduced gas. The vertical separate cylinder can divide the gas regulated by the pressure regulating unit. The ring pipe sets up in the outside of storage tank body lower part, and ring pipe one end is connected with vertical cylinder, and the other end is connected with the gasification bed.

As shown in fig. 10, a bed 470 is disposed below the storage tank 410 and is capable of supporting the storage tank. Base 470 may include a base plate and a plurality of posts disposed on the base plate, the plurality of posts being capable of supporting a storage tank.

The weighing system may include a plurality of tank scales, a plurality of transmission cables, and 1 weight control device, for example, see a schematic diagram shown in fig. 11. The number of the tank scales 510 can be determined according to actual conditions on site, and can be 3-5, for example. The number of transmission cables 520 is the same as the number of tank scales 510. The weighing control device may comprise a weighing control cabinet. As shown in FIG. 11, each tank scale may include a first scale platform 511, a second scale platform 512, a weight sensing unit (not shown in FIG. 11), and a junction box 514. The first scale platform 511 may be disposed above the second scale platform 512. A stop (not shown in fig. 11) may be provided between the lower bottom surface of the first platform 511 and the upper bottom surface of the second platform 512. At least three fixed supports 515 may be disposed on the top of the first platform 511 to support the barite powder storage tank. The fixing support 515 may include a fixing bolt, and a lower end of the fixing bolt may be connected to the top of the second platform 512, and may be fixedly connected thereto. At least three through holes can be formed in the table top of the first weighing platform, the through holes can be in one-to-one correspondence with the fixing bolts, each fixing bolt can be inserted into the corresponding through hole, and further, the number of the fixing support pieces can be 3-5, for example, 4, and the fixing pieces can enable the barite powder storage tank to be more stable.

In this embodiment, as shown in FIG. 10, the tank scale 510 may be positioned below the bed 470 of the stock tank.

In this embodiment, as shown in fig. 8, the vertical cylinder may include a cylinder body 451, and an air supply inlet pipe 452, a blow-down pipe 456, a loop pipe communicating pipe 453, a scavenging air pipe 454, a boost air pipe 455, a safety valve 458a, and a safety valve communicating pipe 458b provided on a wall of the cylinder body 451.

The cylinder body 451 may have a hollow structure. The cylinder body 451 may be provided at the top thereof with a pressure gauge 459 on the outside, and the pressure gauge 459 may detect the air pressure inside the slave cylinder. The cavity structure may be in communication with a gas supply inlet 452, a blow-down pipe 456, a loop conduit 453, a scavenge air pipe 454, an assist air pipe 455, and a safety valve conduit 458b, respectively.

The end of the gas inlet pipe 452 away from the cavity structure of the cylinder body may be connected to a pressure reducing valve through a pipeline, and can introduce the reduced pressure gas to make it flow in the cylinder body. An air supply inlet control valve may be provided on air supply inlet 452. The air supply inlet control valve may comprise a butterfly valve.

The one end accessible pipeline that atmospheric duct 456 deviates from cylinder body cavity structure is connected with the external world and can make the gaseous circulation to the external world in the cavity, and progress one, can be connected with external mud jar to avoid direct gaseous emission to causing air pollution in the cylinder body. A vent control valve may be provided on vent 456.

The end of the bustle pipe 453 facing away from the cavity structure of the cylinder may be connected to a bustle pipe and pass the gas in the cavity structure into the bustle pipe. A feed loop control valve, which may comprise a ball valve, may be disposed on loop conduit 453.

The sweep gas pipe 454 may be connected by piping to a sweep leg 442 on the effluent pipe. The end of the scavenging air pipe 454 departing from the cylinder cavity structure can be connected with the scavenging branch pipe 442 through a pipeline and can enable the air in the cavity structure to flow to the discharging pipe, so that the discharging pipe can be cleaned. The scavenge air line 454 may be provided with a scavenge air line control valve and the scavenge air line control valve 505 may include a ball valve.

The windward pipe 455 may be connected to the windward intake port 441b through a pipeline. The end of the air assisting pipe 455, which is away from the cylinder cavity structure, can be communicated with the discharging pipe through a pipeline and can enable air in the cylinder cavity structure to flow to the discharging pipe, so that the cleaning effect on the discharging pipe is achieved. The air tube 455 may be provided with an air tube control valve.

Wherein, the control valves on the gas source inlet pipe 452, the emptying pipe 456, the loop communicating pipe 453, the scavenging line air pipe 454 and the auxiliary air pipe 455 can enable the pipe bodies to be in a circulating or closed state; furthermore, the flow rate of the gas flowing through the pipe body can be adjusted.

In this embodiment, the vertical separation cylinder can be further provided with a drain outlet 457, the drain outlet can be arranged at the bottom of the cylinder body, and the drain outlet can discharge condensed water in the cavity structure.

In this embodiment, the loop may comprise two annular steel pipes arranged in parallel, namely a first sub-loop 462, a second sub-loop 463. Gas passing through the upper loop gas inlets 461 can enter the first and second sub-loops, respectively. In the case that the storage tank 410 includes 3 fluidized beds 1110 and 3 air inlets, as shown in fig. 9, the first sub-ring pipe 462 may be located inside the second sub-ring pipe 463, the first sub-ring pipe 462 is provided with 3 first air outlets 464, the second sub-ring pipe 463 is provided with 3 second air outlets 465, the 3 first air outlets 464 may be respectively connected with the 3 gasification beds of the storage tank through pipelines, and the 3 second air outlets 465 may be respectively connected with the 3 air inlets of the storage tank through pipelines to blow air into the storage tank and make the barite powder flow together with the fluidized beds.

In this embodiment, the filter 431 may include a drawer-type screen plate, and the filter 431 may be provided with a quick-opening hand hole to facilitate cleaning of the filter, so as to prevent the filter from being clogged.

In this embodiment, a vertical, horizontal or other tie bar may be disposed between the feeding pipe 432 and the inner wall of the material storage tank body; preferably, the lacing wire can be arranged in the vertical direction to avoid blockage caused by ash and caking in the tank.

In this embodiment, the pressure reducing valve may comprise a spring diaphragm pressure reducing valve.

In this embodiment, a plurality of barite powder storage modules may be combined, for example, two barite powder storage modules may be combined, and the discharge pipes of the two barite powder storage modules may be connected to the charging opening of the mixing hopper of the charging pump or the weighting pump through a tee joint.

The barite powder storage module can also store cement so as to reduce bulk cement tanks in well cementation operation and adapt to the narrow working condition of the well cementation operation site of an oil field.

In this embodiment, the tank scale may further include a plurality of limit protectors 513 corresponding to each of the fixed supports 515.

A plurality of hoisting members 516 can be arranged on the side surface of the first weighing platform and/or the second weighing platform so as to hoist the tank scale conveniently. As shown in fig. 11, the second scale platform is provided with a plurality of lifting members 516. The number of the hoisting members can be set according to actual requirements, for example, the number of the hoisting members can be 3-5, and further, for example, the number of the hoisting members can be 4.

In this embodiment, the stopper protector 513 may include a hollow ring-shaped member, such as a hollow tube, which can be fitted over the corresponding fixing bolt and can be inserted into the gap between the through hole and the bolt. The position-limiting protection part 513 may further include a nut which can be screwed into the hollow tube from the upper end of the fixing bolt and fasten the hollow tube in the case that the hollow tube is sleeved on the fixing bolt, and when the tank scale needs to be used, the nut must be loosened and the position-limiting protection member must be taken out to ensure the metering accuracy.

Alternatively, the position-limiting protection member 513 may only include a nut, which can be screwed in from the upper end of the fixing bolt and also can play a position-limiting protection role.

When the tank scale needs to be transported, the limiting protection piece can prevent the support piece from being damaged by direct collision, and can also prevent the support piece from shifting due to accidents, and can further prevent sundries from falling into gaps between the support piece and the hole wall of the through hole.

In this embodiment, the load cell includes at least three sensors (not shown in fig. 11), the sensors may include high-precision pressure sensors, and the number of the sensors may be 3 to 5, for example, 4. At least three sensors may be in one-to-one correspondence with the at least three fixed supports 515 and may be respectively disposed on the fixed supports, the sensors being able to take the weight signal of the weighing object and convert it into a voltage signal (in mV order) proportional thereto.

In this embodiment, the terminal boxes 514 may be electrically connected to the sensors respectively and can acquire voltage signals detected by the sensors and output the voltage signals to the weighing control device. The junction box may be located within the scale platform, and when the junction box is positioned on or within the scale platform, the junction box 514 of the scale body and the weight control device 530 may be connected by aerial plugs at the ends of the transmission cable 520.

In this embodiment, the number of transmission cables 520 is the same as the number of tank scales 10 (or junction boxes 514) and can correspond one to one.

In this embodiment, the welding of the tank scale can be equipotential welding, the weighing platform cannot be used as a welding ground, and the sensor cannot be connected in series in a welding loop, so as to ensure the safe and normal use of the tank scale.

In this embodiment, the weighing control device 530 may be separately disposed from the first and second weighing

platforms

511, 512, and may include a power source, and a plurality of weighing control units. Wherein,

the power supply can be respectively connected with the plurality of weighing control units to supply power.

The weighing control unit can be the same with the quantity of jar body balance and both can the one-to-one. Each weighing control unit can comprise a data acquisition unit, a microprocessor and a display which are connected in sequence. The data acquisition unit can be connected with the junction box through a corresponding transmission cable and can comprise a signal amplification circuit, a signal filter circuit and a digital-to-analog conversion circuit which are sequentially connected and finally connected to the microprocessor.

The signal amplifying circuit can receive a voltage signal output by the junction box and amplify the voltage signal for output, the signal filtering circuit can receive the amplified voltage signal and filter the amplified voltage signal for output, the digital-to-analog conversion circuit can convert the filtered voltage signal into a digital signal for output, the microprocessor is configured to process the digital signal, the display can display weight data of a weighing object, and the weight data is weight data of the weighing object on the tank scale connected with the weighing control unit where the display is located.

In this embodiment, the weighing range of the tank scale for the barite powder storage tank can be 0.2-60 t, the working temperature can be-19-50 ℃, and the use precision can reach 2-1 per mill.

When the tank scale is used, the weighing platform needs to be ensured to be in a horizontal state, and the periphery of the weighing platform can keep a gap of more than 20mm with peripheral objects.

In this embodiment, at the in-process that the barite powder storage tank made the ash to unload the ash again from dress ash to gasification, weighing control device can do the storage to the weight change data of the barite powder storage tank of operation overall process, can avoid appearing because weighing data lean on the authenticity of artifical record and the existence can't verify the feeding data, extravagant, the serious problem of misreport phenomenon.

The weighing control device not only has the function of displaying real-time data, but also has the functions of storing, inquiring, counting and the like. The weighing control device can also be provided with management authority, and can also inquire and count according to conditions such as time, vehicle number, delivery unit, operator and the like, automatically generate a statistical form and export weighing management data in a USB flash disk, wired transmission or wireless transmission mode and the like.

Meanwhile, the weighing control device is separated from the scale body, so that the problem that the service life of the weighing control device is shortened due to rough operation in the field working environment, use and relocation can be avoided. Under the condition that the weighing system for the barite powder storage tank is not used, the weighing control device can be placed indoors and is quickly connected with an aviation plug during use, so that the service life of the weighing display and control device is greatly prolonged

In this embodiment, the weighing system may further comprise a computer connected to the weighing control device, and the computer may comprise an industrial computer, such as a grade embedded host. The computer can reduce the failure rate of the weighing control device and realize the management of the weighing control device. In the case of a weighing system for multiple barite powder storage tanks at the site (e.g., a field-produced well team), the computer may be connected to multiple weighing control devices.

Furthermore, the computer and the weighing controller can be integrated and integrated, and can be placed indoors when not in use and quickly connected by an aviation plug when in use, so that the service life of the weighing display and control device is greatly prolonged.

In this embodiment, the operation procedure for performing the ash loading operation on the barite powder storage tank according to the present invention may include:

the loading unit 430 is used for pneumatic loading, a quick coupling at one end of a hose of the ash truck is connected with a quick coupling at one end of the filter 431, the other end of the hose of the ash truck is connected with an ash discharging port of the ash truck, a control valve on a discharging port is closed, the loading control valve 433 and the exhaust control valve 421 are opened, other valves are all in a default closed state, and an outlet of the emptying pipe 456 is led to a mud pit through a pipeline.

Starting an air compressor (the pressure is less than or equal to 0.3Mpa) of the ash truck, and pressurizing to 0.15 Mpa. And slowly opening an ash discharging butterfly valve of the ash conveying vehicle, and carrying out pneumatic charging operation in the material storage tank body.

If the ash loading speed is slow, the air compressor is turned off, the filter 431 is opened after pressure relief, the hand hole is opened quickly, the filter sieve plate is taken out, and the operation is continued after cleaning.

After the ash is loaded, the air compressor of the ash truck is immediately closed, the material storage tank body and the feeding unit 430 are decompressed to normal pressure, the ash unloading butterfly valve of the ash truck and the feeding control valve 433 of the feeding unit 430 are closed, then the ash conveying hose is detached, the quick connector at one end of the filter 431 is closed, and the exhaust control valve 421 is closed.

The operation procedures of the ash making operation are as follows:

and (3) confirming whether a connecting pipeline of the pressure reducing valve and an external air source and a pipeline externally connected with the emptying pipe 456 are intact or not, and keeping other valves in a default closed state.

The exhaust control valve 421 is opened first, then the gas source inlet pipe control valve 513 is opened, the external gas source is started, and the gas is continuously supplied for about 15 minutes, so that the ash making operation is completed.

The gas supply is closed and then the gas supply inlet control valve is closed, and when the pressure in the tank is about zero, the exhaust control valve 421 is closed again.

And (5) inspecting the sampling port to obtain the ash quality.

The operation procedures of the ash unloading aggravation operation are as follows:

the quick joint end of the discharge pipe leading to the external equipment is opened firstly, then the quick joint of the spare hose is connected with the quick joint end of the discharge pipe leading to the external equipment, and the other end of the spare hose is connected to the feed inlet of the weighting pump mixing funnel.

The weighted pump is turned on first.

And then the discharge control valve 441d, the scavenging air pipe control valve, the air-assisted air pipe control valve and the air source pipe inlet control valve are opened, and the discharge pipe is subjected to primary purging.

And opening the ring feeding control valve 503, increasing the pressure to 0.2Mpa, opening the control valve of the discharge port, and controlling the ash discharging speed by adjusting the opening angle of the discharge port control valve.

After the weighting is finished, the feeding ring pipe control valve and the discharge port control valve are closed, the discharge control valve 421 is opened to release the pressure, the air source feeding pipe control valve, the air assisting pipe control valve and the line sweeping pipe control valve are closed after the air is continuously fed for 5 minutes, then the discharge control valve 441d is closed, and the discharge control valve 421 is closed after the pressure release is finished.

In summary, the advantages of the drilling fluid reserve workstation of the present invention may include:

(1) the connection relation of all systems of the drilling fluid storage workstation is reasonable, the systems can be fully matched, and a good synergistic effect is generated.

(2) The multi-type tank bodies of the drilling fluid storage workstation are combined for use, and the supply requirement of a large amount of oil-based drilling fluid can be met.

(3) The drilling fluid storage tank can be used by combining a plurality of tanks and can be connected with a pump, so that the storage, stirring, circulation, charging, mixing, pumping and the like of the drilling fluid can be met. (4) The tank body of each tank has good structure and integral strength, and can meet the requirements of hoisting, hauling and bearing drilling fluid without deformation of the tank body. The tank body structure design of various tanks is scientific and reasonable, and the whole tank is oil-resistant, high-temperature-resistant, explosion-proof, anti-seepage and corrosion-resistant, and is convenient to clean. Various tanks can adopt an explosion-proof electric cabinet and an explosion-proof lighting lamp set, are provided with a safety grounding device and the like, and are safe and reliable.

(5) The mixing funnel and the Venturi assembly are matched with each other to generate pressure difference, so that required materials can be well added into the drilling fluid in the fluid preparation process of the drilling fluid, no blockage is caused in the adding process, and the solid-phase carrying capacity is high; the system of the invention can promote the flow of drilling fluid in the pipeline; the single-link pump system can be well matched with a device in the storage process of the drilling fluid to prepare the drilling fluid, and is simple in structure and convenient to install.

(6) All parts of the barite powder storage system can act synergistically, so that the barite powder operation can run efficiently. Such as efficient loading and unloading operations; meanwhile, the barite powder storage system can reduce the use amount of the umbrella-shaped cement tanks and the barite powder tanks in the well cementation operation to the maximum extent so as to adapt to the narrow working condition requirement of the field of the well cementation operation of the petroleum field.

(7) The invention can blow and clean the barite powder storage tank body at any time, and effectively prevents the blockage of the tank body ash discharge pipeline caused by agglomeration. According to the barite powder storage tank, the exhaust pipe in the tank body of the barite powder storage tank, the feeding pipe and the tank wall can be vertically arranged through the lacing wire, so that the blockage caused by ash in the pipe and agglomeration can be effectively avoided. The arrangement of the drain outlet on the vertical air distributing cylinder in the barite powder storage system can separate out condensed water in the air without entering the tank body.

(8) The weighing system in the barite powder storage system has the advantages of high measurement precision, high accuracy and low cost. The invention can realize the management and control of the weighing of a plurality of tank scales through one weighing control device, thereby reducing the labor intensity of well cementation operation and improving the working efficiency and the authenticity of weighing data. The weighing system has the functions of displaying, storing, inquiring, counting and the like, and can prevent related data from being deleted and tampered manually. The weighing control device is separated from the scale body, so that the influence of the field working environment can be avoided, and the problem of service life shortening caused by rough operation such as use and relocation can be avoided. The weighing device can also be provided with a grounding unit, so that the influence of the soil resistivity of the address near the scale body can be avoided, the protection effect is improved, and the damage of lightning stroke and fault current is avoided.

Although the present invention has been described above in connection with exemplary embodiments, it will be apparent to those skilled in the art that various modifications and changes may be made to the exemplary embodiments of the present invention without departing from the spirit and scope of the invention as defined in the appended claims.

Claims

1. A drilling fluid storage workstation, comprising: a slurry rotating system, a slurry preparing system, a drilling fluid modulating system, a drilling fluid storage system, a circulating system and a barite powder storage system, wherein,

the rotor system includes: the slurry mixing system comprises a slurry mixing tank and a sand pump, wherein the slurry mixing tank can contain basic drilling fluid and comprises a tank body surrounded by a first base, a first peripheral side wall and a first top plate, at least 1 manhole cover component is further arranged on the first top plate, and the sand pump can transmit the basic drilling fluid in the slurry mixing tank to a slurry distribution system;

the slurry preparation system comprises at least one slurry preparation tank, wherein the slurry preparation tank can receive basic drilling fluid transmitted by a sand pump and comprises: the slurry tank comprises a tank body, a middle partition plate, two groups of first stirrers, two groups of first liquid inlet pipe assemblies, two groups of first liquid discharge pipe assemblies, two groups of first liquid level meter assemblies and two groups of first sand cleaning door assemblies, wherein the tank body is formed by encircling a second base, a second peripheral side wall and a second top plate; the two groups of stirrers can respectively stir the drilling fluid in the two sub-tanks; the two groups of first liquid inlet pipe assemblies are arranged on the second top plate and are respectively communicated with the two sub-tanks; the two groups of first liquid discharge pipe assemblies are arranged at the lower part of the second peripheral side wall and are respectively communicated with the two sub-tank bodies; the two groups of first liquid level meter assemblies can respectively measure and display the heights of the drilling fluid in the two sub-tank bodies; the two groups of first sand cleaning door assemblies are respectively arranged at the lower parts of the second peripheral side walls corresponding to the two sub tank bodies;

the drilling fluid modulation system comprises at least 1 feed pump, and the feed pump can mix the basic drilling fluid and the ingredients in the slurry preparation tank to obtain the target drilling fluid; the charge pump includes: the system comprises a suction pipeline, a pump main body, a Venturi assembly, a discharge pipeline and a mixing funnel, wherein the suction pipeline, the pump main body, the Venturi assembly and the discharge pipeline are sequentially connected according to the flowing direction of drilling fluid, and the mixing funnel is arranged above the Venturi assembly, wherein the suction pipeline can receive and flow through the basic drilling fluid in the slurry distribution tank; the venturi assembly comprises a first pipe body, a second pipe body and a third pipe body, wherein the first pipe body, the second pipe body and the third pipe body are sequentially connected and finally connected to a discharge pipeline, one end of the first pipe body is connected with the pump main body, the pipe diameter of the second pipe body is gradually increased along the flowing direction of drilling fluid, the pipe diameter of a liquid inlet end of the second pipe body is smaller than that of the first pipe body, and the lower end of the third pipe body is communicated with the first pipe body; the mixing funnel can add ingredients into the Venturi tube part, and a discharge hole connected with the upper end of the third tube body is formed in the bottom of the mixing funnel;

the drilling fluid storage system comprises at least 1 drilling fluid storage tank, each drilling fluid storage tank can store target drilling fluid obtained by the charge pump, and the drilling fluid storage system comprises: the drilling fluid cleaning device comprises a tank body, at least 1 second stirrer, at least 1 second liquid inlet pipe assembly, at least 1 second liquid discharge pipe assembly, 1 second liquid level meter assembly and at least 1 second sand cleaning door assembly, wherein the tank body is formed by a third base, a third peripheral side wall and a third top plate in a surrounding mode, and the second stirrer can stir drilling fluid in the tank body; the second liquid inlet pipe assembly is arranged on the third top plate and communicated with the interior of the tank body; the second liquid discharge pipe assembly is arranged at the lower part of the third peripheral side wall and is communicated with the interior of the tank body; the second liquid level meter component can measure and display the height of the drilling liquid in the tank body; the second sand removal door assembly is arranged at the lower part of the third peripheral side wall and is communicated with the interior of the tank body;

the barite powder storage system comprises: at least 1 barite powder storage module, barite powder belongs to one in the batching, barite powder storage module can be to the mixing funnel of charge pump carries the barite powder, and includes: the device comprises a storage tank body, an exhaust pipe, a feeding unit, a discharging unit, a gas distribution unit and a base, wherein the storage tank body can store barite powder, at least one gasification bed is arranged at the lower part of the storage tank body, and a discharge hole is formed in the bottom of the storage tank body; the exhaust pipe can exhaust gas in the storage tank body, the upper end of the exhaust pipe is positioned at the upper part in the storage tank body, the lower end of the exhaust pipe is positioned outside the storage tank body, and an exhaust control valve is arranged on a pipe section of the exhaust pipe, which is positioned outside the storage tank body; the feeding unit can convey barite powder into the storage tank body and comprises a feeding control valve, a feeding pipe and a filter, wherein the feeding pipe and the filter are connected, the feeding pipe penetrates through the pipe wall of the storage tank body, the upper end of the feeding pipe is located at the upper part in the storage tank body, the lower end of the feeding pipe is located outside the storage tank body, and the feeding control valve is located on a pipe section of the feeding pipe located outside the storage tank body; the filter is arranged outside the material storage tank body, one end of the filter is connected with the lower end of the feeding pipe, and the other end of the filter can receive barite powder conveyed from the outside; the discharging unit can discharge barite powder in the storage tank body and comprises a discharging pipe connected with a discharging port of the storage tank body, and the discharging pipe can be connected with the mixing hopper through a pipeline; the gas distribution unit can be used for configuring gas required by operation; the base sets up under the storage tank body and can support the storage tank body.

2. The drilling fluid storage workstation of claim 1, wherein the barite powder storage system further comprises: at least 1 tank scale, at least 1 transmission cable and 1 weighing control device, wherein,

3. Drilling fluid storage workstation according to claim 1, wherein the air distribution unit comprises a vertical sub-cylinder, a collar, wherein,

the vertical type cylinder comprises a gas source inlet pipe, a cylinder body and an annular pipe communicating pipe which are sequentially connected according to the gas flowing direction, wherein the gas source inlet pipe can receive gas conveyed by an external gas source;

the ring pipe is provided with 1 air inlet and 1 at least first gas outlet, and the air inlet can be connected through pipeline and ring pipe communicating pipe, perhaps can directly be connected with ring pipe communicating pipe, and the quantity of first gas outlet is the same with the quantity of gasification bed and can the one-to-one, and every first gas outlet can both be to the gasification bed conveying gas who corresponds.

4. The drilling fluid storage workstation of claim 1, wherein the drilling fluid storage system comprises at least 2 sets of drilling fluid storage tanks, each set of drilling fluid storage tanks comprising at least 1 drilling fluid storage tank, the circulation system further comprising at least 2 circulation line sets, wherein,

the number of the circulating line groups is the same as the group number of the drilling fluid storage tanks and can correspond to one another, the number of the circulating line groups is the same as the number of the circulating pumps and can correspond to one another, each circulating line group comprises a first type pipeline and a second type pipeline, wherein,

the first type of pipeline is provided with at least 1 first liquid inlet end and 1 first liquid discharge end, the number of the first liquid inlet ends is the same as that of the second liquid discharge pipe assemblies in the corresponding drilling fluid storage tank group, the first liquid inlet ends in corresponding relation are connected with the second liquid discharge pipe assemblies, and the first liquid discharge ends are connected with the liquid inlet ends of the corresponding circulating pumps;

at least 1 second liquid discharge end and 1 second liquid inlet end are arranged on the second type pipeline, the number of the second liquid discharge ends is the same as that of the second liquid inlet pipe assemblies in the corresponding drilling fluid storage tank group, the second liquid discharge ends in corresponding relation are connected with the second liquid inlet pipe assemblies, and the second liquid inlet ends are connected with the liquid discharge ends of the corresponding circulating pumps.

5. The drilling fluid storage workstation according to claim 4, wherein in the case that the number of the circulation line groups is M, the first type of lines in the N circulation line groups are connected through a connecting line provided with a regulating valve; the second type pipelines in the P circulating pipeline groups are also connected through a connecting pipeline provided with a regulating valve, wherein M is more than or equal to 2, M is more than or equal to N is more than or equal to 2, M is more than or equal to P is more than or equal to 2, and M, N, P is an integer.

6. The drilling fluid storage station of claim 1, wherein the first inlet conduit assembly, the first drain conduit assembly, the second inlet conduit assembly and the second drain conduit assembly are each provided with a regulating valve.

7. The drilling fluid storage workstation of claim 1, wherein the drilling fluid conditioning system further comprises at least 1 set of conditioning lines, the number of sets of conditioning lines being the same as the number of make-up tanks and being capable of one-to-one correspondence, the number of sets of conditioning lines being the same as the number of charge pumps and being capable of one-to-one correspondence, each set of conditioning lines comprising a third type of line and a fourth type of line, wherein,

the third type pipeline is provided with at least 2 third liquid inlet ends and 1 third liquid discharge end, the number of the third liquid inlet ends is the same as that of the first liquid discharge pipe assemblies in the corresponding slurry preparation tanks, the third liquid inlet ends in corresponding relation are connected with the first liquid discharge pipe assemblies, and the third liquid discharge ends are connected with the suction pipelines of the corresponding charging pumps;

at least 2 fourth liquid discharging ends and 1 fourth liquid inlet end are arranged on the fourth type pipeline, the number of the fourth liquid discharging ends is the same as that of the first liquid inlet pipe assemblies in the corresponding slurry preparation tanks, the fourth liquid discharging ends in corresponding relation are connected with the first liquid inlet pipe assemblies, and the fourth liquid inlet ends are connected with discharge pipelines of corresponding charging pumps.

8. The drilling fluid storage workstation of claim 7, wherein the third type of line is further connectable to a second drain assembly of not less than 1 drilling fluid storage tank, and the fourth type of line is further connectable to a second inlet assembly of not less than 1 drilling fluid storage tank.

9. The drilling fluid storage workstation of claim 1, further comprising a weighting system comprising at least 1 weighting pump provided with a mixing hopper, the barite powder storage module being further capable of delivering barite powder to the mixing hopper of the weighting pump,

the weighted pump can mix the target drilling fluid in the drilling fluid storage tank with the barite powder conveyed by the barite powder storage module for further modulation.

10. The drilling fluid storage workstation of claim 9, wherein the drilling fluid storage system comprises X sets of drilling fluid storage tanks, the weighting system comprises Y weighting pumps and Y sets of weighting lines, X is greater than or equal to 2, X is greater than or equal to Y is greater than or equal to 1, and X, Y is an integer; wherein,

the Y weighting pipeline groups can correspond to the Y weighting pumps one by one;

the Y weighted line groups and the Y drilling fluid storage tanks can also correspond one to one;

each of the weighted line sets includes a fifth type of line and a sixth type of line, wherein,

at least 1 fifth liquid inlet end and 1 fifth liquid outlet end are arranged on the fifth type pipeline, the number of the fifth liquid inlet ends is the same as that of the second liquid outlet pipe assemblies in the corresponding drilling fluid storage tank group, the fifth liquid inlet ends in corresponding relation are connected with the second liquid outlet pipe assemblies, and the fifth liquid outlet ends are connected with the liquid inlet ends of the corresponding weighting pumps;

the sixth type of pipelines are provided with at least 1 sixth liquid discharging end and 1 sixth liquid inlet end, the number of the sixth liquid discharging ends is the same as that of the second liquid inlet pipe assemblies in the corresponding drilling fluid storage tank groups, the sixth liquid discharging ends in corresponding relation are connected with the second liquid inlet pipe assemblies, and the sixth liquid inlet ends are connected with the liquid discharging ends of the corresponding weighting pumps.